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Theory of Operation

DM240-DVB High-Speed Digital Modulator

3-2

TM083 - Rev. 3.0

3.2 DVB-S2-BS-NBC Operation

The DVB-S2-BS-NBC version of the DM240 complies with the ETSI EN 302 307 V1.1.1 (2004-
01) specification for non-backward compatible broadcast services.

A block diagram of the signal flow is shown in Figure 3-2 below.

Terrestrial

Interface

PRBS

Generator

Terrestrial

Buffer

CRC-8

Encoder

Slicer

BCH

Encoder

LDPC

Encoder

Bit

Interleaver

Filter

Framing

DVB

Sync

PLL

Modulator

Tx Clock

Symbol Clock

Stream

Adaptation

Mapping

IF Out

Tx Data

SCT

SCTE

DDS

Figure 3-2. Functional Block Diagram

Содержание DM240-DVB

Страница 1: ...uy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing R...

Страница 2: ...DM240 DVB High Speed Digital Modulator Installation and Operation Manual TM083 Revision 3 0 Radyne ComStream Inc 3138 E Elwood St Phoenix AZ 85034 602 437 9620 Fax 602 437 4811 www radn com...

Страница 3: ......

Страница 4: ...n any way to shipping storage accident abuse alteration misuse neglect failure to use products under normal operating conditions failure to use products according to any operating instructions provide...

Страница 5: ...ld repair will be accomplished The Repair Authorization may be requested in writing or by calling Radyne ComStream Inc 3138 E Elwood St Phoenix Arizona 85034 USA ATTN Customer Support Phone 602 437 96...

Страница 6: ...label will be shown enclosed in less than and greater than brackets For example the Reset Alarms Pushbutton will be shown as RESET ALARMS while a command that calls for the entry of a 7 followed by EN...

Страница 7: ...be understood to be representations or warranties concerning the products described Radyne ComStream Inc assumes no responsibility for use of any circuitry other than the circuitry employed in Radyne...

Страница 8: ...Operation_________________________________________3 2 Section 4 User Interfaces 4 0 User Interfaces___________________________________________________4 1 4 1 Front Panel User Interface _______________...

Страница 9: ...________________4 24 4 13 Terminal Port User Interface ______________________________________4 26 Section 5 Rear Panel Interfaces 5 0 DM240 Connections_______________________________________________5...

Страница 10: ...________________5 12 5 15 3 1 DVB ______________________________________________________5 12 5 15 4 Parallel LVDS Interface_________________________________________5 12 Section 6 Maintenance and Troub...

Страница 11: ...f Contents DM240 DVB High Speed Digital Modulator x TM083 Rev 3 0 Appendix B SNMP MIB _____________________________________________ B 1 Glossary _______________________________________________________...

Страница 12: ...of Radyne ComStream s outstanding Customer Support Additionally features are added to the installed equipment base with extreme ease allowing the equipment to expand with changes in service while low...

Страница 13: ...Introduction DM240 DVB High Speed Digital Modulator 1 2 TM083 Rev 3 0...

Страница 14: ...eft and IF cabling enter from the right when viewed from the rear of the unit Data and control cabling can enter from either side although they are closer to the center The unit can be placed on a tab...

Страница 15: ...ld be replaced The power supply itself is designed for universal application using from 100 to 240 VAC 50 to 60 Hz 40 W 2 3 Mounting Considerations When mounted in an equipment rack adequate ventilati...

Страница 16: ...factory are normally shipped in a default configuration which includes setting the transmit carrier off Turn the unit ON by placing the rear panel switch above the power entry connector to the ON posi...

Страница 17: ...Installation DM240 DVB High Speed Digital Modulator 2 4 TM083 Rev 3 0...

Страница 18: ...oming stream is framed The data is scrambled and FEC is added The data is then convolutionally encoded punctured then constellation mapped The resulting I Q Symbols are digitally filtered The data is...

Страница 19: ...ification for non backward compatible broadcast services A block diagram of the signal flow is shown in Figure 3 2 below Terrestrial Interface PRBS Generator Terrestrial Buffer CRC 8 Encoder Slicer BC...

Страница 20: ...shown in Figure 4 1 showing the location and labeling of the front panel The front panel is divided into three functional areas the LCD display the Keypad and the LED Indicators each described below i...

Страница 21: ...Mode Yellow Indicates the modulator is involved in a current test mode activity Power Green Indicates the DM240 unit is currently powered up Fault Red Indicates a common fault exists such as power ou...

Страница 22: ...sor 1 Position Left Moves Cursor 1 Position Right N A N A Enumerated N A Previous Value in List Next Value in List N A N A N A N A Date Time Changes Digit N A N A Moves Cursor 1 Position Left Moves Cu...

Страница 23: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 4 TM083 Rev 3 0 Figure 4 2 DM240 Main Programming Menu...

Страница 24: ...creen Menus The complete set of DM240 DVB Front Panel Control Screens is made up of Main Menus Each Main Menus has several Option and Parameter Screens 4 2 1 Main Menus The Main Menus available from t...

Страница 25: ...icates the network specification to which the unit configuration adheres FREQUENCY MHz IF Carrier Frequency Enter in 100 Hz increments within the following ranges 50 MHz to 90 MHz 100 MHz to 180 MHz 9...

Страница 26: ...data rate by adjusting the symbol rate The Auto Setting of Last Rate Control causes the last explicitly changed rate symbol or data to be maintained when associated parameters are changed For example...

Страница 27: ...L INVERTED Input Clock Polarity Allows the user to use the input clock signal as is or to invert it OUTCLK SRC Status Only When used with G 703 the user may choose between an internal SCT external SCT...

Страница 28: ...testing or fault backup 4 2 3 2 Non PIIC INTERFACE TYPE ASI Advanced ASI HSSI RS 442 Serial M2P Parallel DVB Parallel G 703 T1 B8ZS G 703 T1 AMI G 703 E1 UNBAL G 703 E1 BAL G 703 T2 UNBAL G 703 T2 BA...

Страница 29: ...f the data source and then return it to the SCTE input The DM240 is then set to SCTE mode eliminating any possible clock skew Alternately the data source can generate the SCTE clock internally and the...

Страница 30: ...ay the currently measured 12 VDC power supply 4 2 6 Alarms Menu Options and Parameters CURRENT ALARM Menu Displays Current Alarm Status TX MAJOR Menu Status Edit Table SCT PLL PASS FAIL UNMASKED MASKE...

Страница 31: ...FRAME SYNC PASS FAIL FIFO PASS FAIL TERR CLK ACT PASS FAIL TERR DATA ACT PASS FAIL COMMON Menu 12 VOLTS PASS FAIL 12 VOLTS PASS FAIL 5 VOLTS PASS FAIL CLEAR LATCHED ALARMS FALSE TRUE Set to True to c...

Страница 32: ...FF XX XX XX The IP Address Mask of the local network The mask is expressed in a hexadecimal format and must be a valid TCP IP Mask XX XX XX can start with F E C 8 or 0 Once a character other than F i...

Страница 33: ...250 Mask FF FF 00 00 Modem AC 12 64 D4 Router AC 12 1 5 Server C4 18 E FA Broadcast and loop back addresses will not be allowed These are addresses with all subnet bits set to 0 s or 1 s ROUTER IP AD...

Страница 34: ...tion TRAPS OFF TRAPS ON This controls the message format used when a message trap is generated by the equipment and bound for a SNMP host Messages will only be sent if the unit has been authorized to...

Страница 35: ...atus Only 4 2 8 Test Menu Options and Parameters CARRIER TYPE NORMAL CW DUAL OFFSET POS FIR NEG FIR Sets carrier test modes OUTER FEC NORMAL BYPASS INNER FEC NORMAL BYPASS INTERLEAVER NORMAL BYPASS En...

Страница 36: ...rol bus range from 032 through 255 for a total of up to 224 devices per bus Address 255 of each control bus is usually reserved for the M C computer 4 9 2 Protocol Wrapper The Radyne COMMSPEC is byte...

Страница 37: ...on Code field contains a number that identifies the message type associated with the data that follows it Acknowledgment and error codes are returned in this field This field is 2 Bytes for the DM240...

Страница 38: ...linked equipment initiates a message it assigns the FSN as a tag for error control and handshaking A different FSN is produced for each new message from the FSN originator to a specific device on the...

Страница 39: ...evice that can originate from and are interpreted by all Radyne equipment in the same manner These are summarized as follows all Opcode values are expressed in decimal form RESPONSE OPCODE DESCRIPTION...

Страница 40: ...signed to the equipment If two or more devices are configured for direct linked operation then the M C computer and all other devices configured in the same manner must be programmed to inhibit broadc...

Страница 41: ...implementation of forward and backward software compatibility often but not always requires the addition of new Opcodes Each new function requires a new Opcode assignment if forward and backward compa...

Страница 42: ...om the receiver the FSN increments and the next packet is transmitted as required by the sender If an acknowledgment response packet is lost corrupted or not issued due to an error and is thereby not...

Страница 43: ...n the Internet To date this has not been implemented and therefore is of little interest to us 4 12 2 Mgmt internet 2 1 3 6 1 2 This area was reserved to describe objects in the standard MIB As RFCs d...

Страница 44: ...eed Digital Modulator User Interfaces TM083 Rev 3 0 4 25 Figure 4 4a Object Identifiers in the Management Information Base Figure 1 of 2 Figure 4 4b Object Identifiers in the Management Information Ba...

Страница 45: ...is contained within the DM240 Modem Internal Control Software A break signal on the communications line pressing ESC on the terminal or Power On of the modem will initiate full screen terminal mode p...

Страница 46: ...DM240 DVB High Speed Digital Modulator User Interfaces TM083 Rev 3 0 4 27 Figure 4 6 Modulator Menu Figure 4 7 Event Log Menu...

Страница 47: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 28 TM083 Rev 3 0 Figure 4 8 Multi PIIC Control Menu Figure 4 9 Test Control Menu...

Страница 48: ...DM240 DVB High Speed Digital Modulator User Interfaces TM083 Rev 3 0 4 29 Figure 4 10 TCP IP SNMP Control Menu Figure 4 11 Front Panel RLLP Terminal Control Menu...

Страница 49: ...User Interfaces DM240 DVB High Speed Digital Modulator 4 30 TM083 Rev 3 0 Figure 4 12 RF Switch Control Menu...

Страница 50: ...All DM240 connections are made to labeled connectors located on the rear of the unit Any connection interfacing to the DM240 must be the appropriate mating connector Refer to Figures 5 1a and 5 1b no...

Страница 51: ...and L Band 5 1 AC Power The unit is powered from a 100 240 VAC 50 60 Hz source Maximum unit power consumption is 25 W The switch turns power on and off to the unit A chassis ground connection can be...

Страница 52: ...Stream Customer Service Department The loaded features will be available the next time the unit is powered on 5 2 2 Firmware Update To upgrade the firmware a Firmware Upgrade PCMCIA Card is required F...

Страница 53: ...ut 5 GND Ground 6 Tx A Transmit Data Output 8 Rx B Receive Data Input 9 Rx A Receive Data Input 5 6 Terminal Port I O The Terminal Port Interface J5 can be used for the monitor control functions of th...

Страница 54: ...driven low Minor 1 2 shorted 8 9 shorted open collector output driven low Major 2 3 shorted 7 8 shorted open collector output open 5 8 IF Port Output If the customer orders the 70 140 MHz IF the IF P...

Страница 55: ...es On Line output to Prime Output 7 nBackup_Sel Forces On Line output to Backup Output 8 Local Fault Fault output of modulator Output 4 Distant Fault State of distant modulator Input 3 Switch State Sw...

Страница 56: ...put 13 Not Connected 5 10 2 DVB Parallel RS 422 J8 The DVB Interface is also supported on the DB 25 Female Connector It complies with RS 422 Electrical Specifications The pinouts for this connector ar...

Страница 57: ...The maximum data rate is 216 Mbps 5 10 4 AASI Advanced Asynchronous Serial Interface J12 The AASI Interface is a specialized mode of the normal ASI Interface The interface allows the user to input a...

Страница 58: ...Input 5 Send Timing SCT A Output 7 Request To Send RTS A Output 9 Clear to Send A Output 11 Data Mode DM A Output 14 NA 15 NA 17 Terminal Timing SCTE A Input 19 Signal GND GND 20 Common GND 22 Send D...

Страница 59: ...736 Coax J8 Female BNC 75 B3ZS STS 1 51 84 Coax J8 Female BNC 75 B3ZS 5 14 HSSI Interface The HSSI High Speed Serial Interface complies with the HSSI Functional and Electrical Specifications The phys...

Страница 60: ...a unit configured for use with PIICs Figure 5 4 greater flexibility for changing and upgrading the terrestrial interface will be available Each of the interfaces described below consists of a single...

Страница 61: ...a rate The AASI Interface inserts MPEG 2 Null Packets to provide a constant data rate to the modulator 5 15 2 ASI Monitor Incoming data from the active PIIC slot is output on this interface allowing t...

Страница 62: ...M240 modulator requires no periodic field maintenance procedures Should a unit be suspected of a defect in field operations after all interface signals are verified the correct procedure is to replace...

Страница 63: ...Maintenance and Troubleshooting DM240 DVB High Speed Digital Modulator 6 2 TM083 Rev 3 0...

Страница 64: ...0 140 MHz 14 dB L Band Phase Noise 1 kHz 73 dBc 10 kHz 86 dBc 100 kHz 100 dBc 1 MHz 120 dBc Output Connector BNC Female 70 140 MHz SMA Female L Band External Reference 1 10 10 MHz in 8 kHz steps bette...

Страница 65: ...Per ETSI EN 302 307 v1 1 1 Block Size 64 Kbits FEC Code BCH LDPC Interleaver Block Interleaver per ETSI EN 302 307 v1 1 1 Inner Code Rate 1 2 3 5 2 3 3 4 4 5 5 6 8 9 9 10 QPSK 3 5 2 3 3 4 5 6 8 9 9 10...

Страница 66: ...aming Clock Data Sources Clock Data Polarity Reference Freq Source External Reference Freq Test Modes Parameters Monitored Alarms Major Minor Stored Alarms Major Minor Faults Stored Faults 7 5 Environ...

Страница 67: ...Technical Specifications DM240 DVB High Speed Digital Modulator 7 4 TM083 Rev 3 0...

Страница 68: ...the product it should disregard the parameters at the end of the Non Volatile Section and index to the start of the Volatile Section Before creating any software based on the information contained in...

Страница 69: ...Polarity Transmit Power Level Spectrum Reference Source Network Specification External Reference Frequency Data Polarity Terrestrial Interface Type Terrestrial Framing Carrier Set Roll Off Output Clo...

Страница 70: ...Binary Value 1bps steps 4 External Reference Binary Value units Hz in 8000Hz steps e g 1000000Hz 1008000Hz etc 256000Hz to 10000000Hz 1 Frequency Reference Source 0 Internal 1 External 1 Modulation Ty...

Страница 71: ...0 Normal 1 Inverted 1 Data Polarity 0 Normal 1 Inverted 1 Input Clock Source 0 SCTE 1 SCT 1 Reserved TBD Default 0 11 Reserved TBD 1 Reserved TBD 1 Major Alarm Mask Bit 0 Spare Bit 1 Transmit Oversam...

Страница 72: ...188 Byte 1 204 Byte 2 No Framing 1 Roll Off 0 0 35 25 0 25 1 0 20 1 Reserved TBD 1 Output Clock Source 0 SCTE 1 SCT 2 None 1 Network Spec 0 DVB S 11 DVB S2 BS NBC 12 DVB S2 BS BC 1 BB Scrambler Bypass...

Страница 73: ...C Slot Without Multi PIIC Card 1 With Multi PIIC Card 1 3 1 Pilot Symbols 0 Off 1 On 1 Inner FEC Bypass 0 Normal 1 Bypass 1 PL Scrambler Bypass 0 Normal 1 Bypass 2 Reserved Set to 0 2 Reserved Set to...

Страница 74: ...Lock Bit 2 FPGA Config Error Bit 3 IF Synthesizer PLL Lock Bit 4 External Reference PLL Lock Bit 5 SCT PLL Lock Bit 6 Spare Bit 7 Spare 0 Pass 1 Fail 1 Latched Minor Alarm Bit 0 Spare Bit 1 Loss Terre...

Страница 75: ...I 0x94 RS422 0x95 LVDS Parallel 0x96 ASI Out Monitor 0xFF None 1 Slot 2 PIIC Type Without Multi PIIC Card Unused With Multi PIIC Card 0x93 ASI 0x94 RS422 0x95 LVDS Parallel 0x96 ASI Out Monitor 0xFF N...

Страница 76: ...it 5 Terrestrial Framing Error Bit 6 Spare Bit 7 Spare 0 Pass 1 Fail 1 Latched Common Fault Bit 0 12 V Alarm Bit 1 12 V Alarm Bit 2 5 V Alarm Bit 3 Spare Bit 4 Spare Bit 5 Spare Bit 6 Spare Bit 7 Spar...

Страница 77: ...larm Bit 0 Spare Bit 1 Transmit Oversample PLL Lock Bit 2 FPGA Config Error Bit 3 IF Synthesizer PLL Lock Bit 4 External Reference PLL Lock Bit 5 SCT PLL Lock Bit 6 Spare Bit 7 Spare 0 Pass 1 Fail 1 M...

Страница 78: ...t 3 FIFO Error Bit 4 Spare Bit 5 Terrestrial Framing Error Bit 6 Spare Bit 7 Spare 0 Pass 1 Fail 1 Latched Common Fault Bit 0 12 V Alarm Bit 1 12 V Alarm Bit 2 5 V Alarm Bit 3 Spare Bit 4 Spare Bit 5...

Страница 79: ...d Unused With Multi PIIC Card 0x93 ASI 0x94 RS422 0x95 LVDS Parallel 0x96 ASI Out Monitor 0xFF None 1 Slot 3 PIIC Type Without Multi PIIC Card Unused With Multi PIIC Card 0x93 ASI 0x94 RS422 0x95 LVDS...

Страница 80: ...ev 16 Firmware Part Rev ASCII null terminated string Opcode 2456h Query AASI NULL PID 2 PID 0x0010 0x1FFF Opcode 2457h Query IPSat Burst Demod Count 2 Num Burst Demods 1 50 Opcode 2458h Query IPSat Co...

Страница 81: ...SI Out Monitor 0xFF None 1 Slot 2 PIIC Type 0x93 ASI 0x94 RS422 0x95 LVDS Parallel 0x96 ASI Out Monitor 0xFF None 1 Slot 3 PIIC Type 0x93 ASI 0x94 RS422 0x95 LVDS Parallel 0x96 ASI Out Monitor 0xFF No...

Страница 82: ...equency Reference Source 0 Internal 1 External 1 Modulation Type 0 QPSK 1 BPSK 2 8PSK 3 16QAM See note at the end of this command 1 Inner FEC Rate 1 1 2 Rate 2 2 3 Rate 3 3 4 Rate 4 5 6 Rate 5 7 8 Rat...

Страница 83: ...nput Clock Polarity 0 Normal 1 Inverted 1 Data Polarity 0 Normal 1 Inverted 1 Input Clock Source 0 SCTE 1 SCT 1 Reserved TBD Default 0 11 Reserved TBD 1 Reserved TBD 1 Major Alarm Mask Bit 0 Spare Bit...

Страница 84: ...te 2 No Framing See note at the end of this command 1 Roll Off 0 0 35 25 0 25 1 0 20 1 Reserved TBD 1 Output Clock Source 0 SCTE 1 SCT 2 None See table at the end of this command 1 Network Spec 0 DVB...

Страница 85: ...2 Manual Revert 3 Auto Revert 1 Prime PIIC Slot Without Multi PIIC Card 1 With Multi PIIC Card 1 3 1 Backup PIIC Slot Without Multi PIIC Card 1 With Multi PIIC Card 1 3 1 Pilot Symbols 0 Off 1 On 1 I...

Страница 86: ...g Data Rate Symbol Rate Inner FEC Rate Modulation Type or Terrestrial Framing using the Mod All Command the Data Rate and Symbol Rate parameter must be range checked using the following formulas to en...

Страница 87: ...8 Rate 6 6 7 Rate 7 4 5 8 8 9 Rate 9 9 10 Rate 128 1 4 Rate 129 1 3 Rate 130 2 5 Rate 131 3 5 Rate This command will cause the carrier to turn off Opcode 2609h Command a Modulator s Carrier Control 1...

Страница 88: ...code 2621h Command a Modulator s Interface Type 1 Tx Interface Type 0 Serial 1 Parallel 2 ASI_Norm 3 ASI_Null 4 G 703E3 5 G 703T3 6 G 703STS 1 7 HSSI 8 Parallel DVB 9 Parallel M2P 10 None 13 OC3 14 ST...

Страница 89: ...PID 2 PID 0x0010 0x1FFF Opcode 2659h Command IPSat Enable 1 IPSat Enable 0 OFF 1 ON Opcode 265Bh Command PCR Restamping 1 PCR Restamping 0 Off 1 On Opcode 265Ch Command Multi PIIC Configuration 1 Mul...

Страница 90: ...d Set Time and Date 1 Year 00 99 1 Month 1 12 1 Day 1 31 1 Hour 0 23 1 Minute 0 59 1 Second 0 59 Opcode 2F40h Command RF Redundancy Mode 1 Redundancy Mode 3 auto revert 4 manual 5 backup Opcode 2F41h...

Страница 91: ...IPTION Power level in tenths of a dBm SYNTAX INTEGER RadVoltageLevel TEXTUAL CONVENTION DISPLAY HINT d 1 STATUS current DESCRIPTION Voltage level in tenths of a volt SYNTAX INTEGER RadString TEXTUAL C...

Страница 92: ...level of 3 9 dBm radSNMP_Mod_NV_Status 2 radIFFrequency OBJECT TYPE SYNTAX INTEGER 50000000 1750000000 ACCESS read write STATUS current DESCRIPTION Selects IF frequency in Hz radSNMP_Mod_NV_Status 3 r...

Страница 93: ...rate and type Note Changing the convolutional encoder will affect symbol rate and data rate See note at the end of this section Unsupported choices include none viterbi6_7 radSNMP_Mod_NV_Status 8 radC...

Страница 94: ...256000 10000000 ACCESS read write STATUS current DESCRIPTION Selects the external reference frequency in Hz with a 8000Hz step size radSNMP_Mod_NV_Status 13 radInterfaceType OBJECT TYPE SYNTAX INTEGE...

Страница 95: ...X INTEGER inverted 0 normal 1 ACCESS read write STATUS current DESCRIPTION Inverts the symbol mapping direction of rotation radSNMP_Mod_NV_Status 17 radModulationType OBJECT TYPE SYNTAX INTEGER qpsk 0...

Страница 96: ...SS read write STATUS optional DESCRIPTION Disables differential encoder unsupported radSNMP_Mod_NV_Status 23 radAlarmMaskEnable OBJECT TYPE SYNTAX INTEGER disable 0 enable 1 ACCESS read write STATUS o...

Страница 97: ...DESCRIPTION Test Pattern Operating Mode None 2 15 1 2 23 1 radSNMP_Mod_NV_Status 28 radCarrierTest OBJECT TYPE SYNTAX INTEGER normal 0 cw 1 dual 2 offset 3 posfir 4 negfir 5 ACCESS read write STATUS...

Страница 98: ...isables the interleaver radSNMP_Mod_NV_Status 33 radOutClockSelection OBJECT TYPE SYNTAX INTEGER scte 0 sct 1 none 2 ACCESS read write STATUS current DESCRIPTION Selects the source of clock output fro...

Страница 99: ...s redundancy radSNMP_Mod_NV_Status 39 radPrimePiicSlot OBJECT TYPE SYNTAX INTEGER ACCESS read write STATUS current DESCRIPTION If the Multi PIIC mode is manual radPrimePiicSlot selects the input slot...

Страница 100: ...calIpAddress OBJECT TYPE SYNTAX IpAddress ACCESS read write STATUS current DESCRIPTION Selects the local IP address radSNMP_Mod_NV_Status 45 radPilotSymbolsEnabled OBJECT TYPE SYNTAX INTEGER disable 0...

Страница 101: ...ent DESCRIPTION Activates the primary or backup side of the RF switch radSNMP_Mod_NV_Status 50 radRfSwitchFaultTestMode OBJECT TYPE SYNTAX INTEGER normal 1 faulted 2 ACCESS read write STATUS current D...

Страница 102: ...AX INTEGER 0 255 ACCESS read only STATUS current DESCRIPTION Major Alarm latched status A bit field 0 PASS 1 FAIL Bit 1 Oversample Clock PLL Lock Bit 2 FPGA Configuration Error Bit 3 Synthesis Clock P...

Страница 103: ...th implied decimal point For example a value of 122 represents 12 2 Volts radSNMP_Mod_Status 10 radTemperature OBJECT TYPE SYNTAX INTEGER 0 1000 ACCESS read only STATUS optional DESCRIPTION Temperatur...

Страница 104: ...ccessible STATUS mandatory DESCRIPTION PIIC slot status table radSNMP_Mod_Status 16 radPiicSlotStatusEntry OBJECT TYPE SYNTAX RadPiicSlotStatusEntry ACCESS not accessible STATUS optional DESCRIPTION P...

Страница 105: ...adRfSwitchActiveSide OBJECT TYPE SYNTAX INTEGER primary 1 backup 2 ACCESS read only STATUS current DESCRIPTION Indicates the active input of the RF switch radSNMP_Mod_Status 17 radRfSwitchDistantSideF...

Страница 106: ...Appendix B DM240 DVB High Speed Digital Modulator B 16 TM083 Rev 3 0...

Страница 107: ...all binary 1s AMSL Above Mean Sea Level ANSI American National Standards Institute ASCII American Standard Code for Information Interchange ASIC Application Specific Integrated Circuit ATE Automatic T...

Страница 108: ...r to Noise Ratio D DAC Digital to Analog Converter dB Decibels dBc Decibels Referred to Carrier dBm Decibels Referred to 1 0 milliwatt DC Direct Current Demod Demodulator or Demodulated DPLL Digital P...

Страница 109: ...s FW Firmware G g Force of Gravity GHz Gigahertz GND Ground H HSSI High Speed Serial Interface HW Hardware Hz Hertz Unit of Frequency I IBS Intelsat Business Services IDR Intermediate Data Rate I O In...

Страница 110: ...cond MFAS Multi Frame Acquisition Sync See FAS MHz Megahertz MIB Management Information Base Mod Modulator or Modulated ms or msec Millisecond M C Monitor and Control N NC Normally Closed NO Normally...

Страница 111: ...ased error correcting codes with a wide range of applications in digital communications and storage S SCC Satellite Control Channel A Radyne ComStream satellite format SEQ Sequential SYNC Synchronize...

Страница 112: ...Glossary DM240 DVB High Speed Digital Modulator G 6 TM083 Rev 3 0 W X Y Z W Watt Misc s Microsecond 16QAM 16 Quadrature Amplitude Modulation 8PSK 8 Phase Shift Keying...

Страница 113: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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